Use this link to calculate a PV Solar System's Output. PV-Watts

Key dates are Dec 21st and June 21st (Lowest and Highest Sun Angles)
Default is set to Boulder Colorado.
Don't forget to enter the time of day. (Approx 12:00)

SUN POSITION CALCULATOR
(C)2001, Senol Gulgonul

Latitude: degrees, minutes
Longitude: degrees, minutes
Year: Month: Day: , Hour: Minute:
Time Zone: hours from Greenwich (GMT)
Twilight Angles: Morning degrees , Evening degrees


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Measure height and shadow of an object (rod,pencil etc) and compare results.
Height= unit, = unit